20246 has 8 divisors (see below), whose sum is σ = 31104. Its totient is φ = 9880.

The previous prime is 20233. The next prime is 20249. The reversal of 20246 is 64202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a nialpdrome in base 12 and base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 20246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20249) by changing a digit.

20246 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11 + ... + 201.

It is an arithmetic number, because the mean of its divisors is an integer number (3888).

2²⁰²⁴⁶ is an apocalyptic number.

20246 is a deficient number, since it is larger than the sum of its proper divisors (10858).

20246 is a wasteful number, since it uses less digits than its factorization.

20246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 20246 is about 142.2884394461. The cubic root of 20246 is about 27.2550140873.

Adding to 20246 its reverse (64202), we get a palindrome (84448).

Subtracting 20246 from its reverse (64202), we obtain a triangular number (43956 = T₂₉₆).

The spelling of 20246 in words is "twenty thousand, two hundred forty-six".